Quarter US dollars 2004-12-31 680 2005-03-31 1078 2005-06-30 670 2005-09-30 690 2005-12-31 879 2006-03-31 1343 2006-06-30 973 2006-09-30 671 2006-12-31 708 2007-03-31 473 2007-06-30 1772 2007-09-30 1408 2007-12-31 1883 2008-03-31 1037 2008-06-30 1437 2008-09-30 1187 2008-12-31 676 2009-03-31 652 2009-06-30 262 2009-09-30 297 2009-12-31 399 2010-03-31 243 2010-06-30 320 2010-09-30 354 2010-12-31 222 2011-03-31 1589 2011-06-30 1575 2011-09-30 509 2011-12-31 492 2012-03-31 192 2012-06-30 180 2012-09-30 249 2012-12-31 243 2013-03-31 250 2013-06-30 306 2013-09-30 217 2013-12-31 182 2014-03-31 180 2014-06-30 180 2014-09-30 175 2014-12-31 184 2015-03-31 159 2015-06-30 153 2015-09-30 154 2015-12-31 144 2016-03-31 122 2016-06-30 132 2016-09-30 127 2016-12-31 113 2017-03-31 111 2017-06-30 307 2017-09-30 330 2017-12-31 315 2018-03-31 317 2018-06-30 309 2018-09-30 297 2018-12-31 301 2019-03-31 280 2019-06-30 298 2019-09-30 297 2019-12-31 277 2020-03-31 346 2020-06-30 276 2020-09-30 305 2020-12-31 319 2021-03-31 338 2021-06-30 314 2021-09-30 202 2021-12-31 294 2022-03-31 324 2022-06-30 299 2022-09-30 295 2022-12-31 352 2023-03-31 375 2023-06-30 370 2023-09-30 403